| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Cedrus deodora | Leaf | -- | 32000.0 | -1.0 | * |
| Solanum tuberosum | Leaf | -- | 32000.0 | -1.0 | * |
| Cornus florida | Bark | -- | 30000.0 | -1.0 | * |
| Pogostemon cablin | Plant | -- | 17000.0 | -1.0 | * |
| Mangifera indica | Seed | -- | 1100.0 | -1.0 | * |
| Sambucus nigra | Leaf | 4400.0 | 30000.0 | -1.0 | * |
| Acacia nilotica | Bark | -- | 27100.0 | -1.0 | * |
| Pachira aquatica | Bark | -- | 27000.0 | -1.0 | * |
| Juglans nigra | Pericarp | 33600.0 | 280000.0 | -1.0 | * |
| Araucaria bidwillii | Wood | -- | 3000.0 | -1.0 | List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979. |
| Caesalpinia pulcherrima | Wood | -- | 3000.0 | -1.0 | * |
| Marrubium vulgare | Flower | 26000.0 | 29000.0 | -1.0 | * |
| Argemone mexicana | Plant | -- | 11000.0 | -1.1 | * |
| Phyllanthus emblica | Leaf | 18000.0 | 22000.0 | -1.1 | * |
| Piper betel | Leaf | 10000.0 | 20500.0 | -1.1 | * |
| Holarrhena pubescens | Bark | -- | 11400.0 | -1.1 | * |
| Ononis spinosa | Plant | -- | 5000.0 | -1.1 | * |
| Myroxylon balsamum | Plant | -- | 4000.0 | -1.2 | * |
| Tsuga canadensis | Leaf | -- | 15000.0 | -1.2 | * |
| Eucalyptus citriodora | Leaf | -- | 11600.0 | -1.2 | * |